Chilblains, painful itchy swellings, occur when cold air causes blood vessels to constrict and then rapidly dilate upon ...
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Why your hands or fingers turn blue: Understanding peripheral cyanosis, causes, and what it says about blood flow
Noticing your hands or fingers turning bluish in colour can be quite unsettling. This condition, known as peripheral cyanosis, occurs when oxygen-rich blood doesn’t reach your hands and feet ...
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